Saline implants are filled with sterile salt water. They're inserted empty, and then filled once they're in place.
Saline breast implants are available to women of 18 and older for breast augmentation and to women of any age for breast reconstruction.

Silicone implants are pre-filled with silicone gel — a thick, sticky fluid that closely mimics the feel of human fat. Most women feel that silicone breast implants look and feel more like natural breast tissue. Silicone breast implants are available to women of 22 and older for breast augmentation and to women of any age for breast reconstruction.

Soreness, slight tightening on the chest etc. can be experienced immediately following surgery. However these symptoms slowly disappear over the next few days.

If an implant ruptures, the approach might vary depending on whether the implant is saline or silicone.

If a saline breast implant ruptures, the implant will deflate — causing the affected breast to change in size and shape.

The leaking saline solution will be absorbed by your body without posing any health risks, but you'll probably need surgery to remove the silicone shell. If you wish, a new implant can likely be inserted at the same time.

If a silicone breast implant ruptures, you might not notice right away — or ever — because any free silicone tends to remain trapped in the fibrous tissue (capsule) that forms around the implant. This is known as a silent rupture.

Leaking silicone gel isn't thought to cause systemic or long-term health problems — such as breast cancer, reproductive problems or connective tissue disease, such as rheumatoid arthritis. Still, a ruptured silicone breast implant might eventually cause breast pain or changes in the contour or shape of the breast.

If this happens, your doctor will likely recommend surgical removal. Reinsertion depends on the clinical condition of the breast and surrounding tissues.

If an MRI scan detects an implant rupture but you don't have any signs or symptoms, it might be up to you and your doctor to weigh the risks and benefits of keeping the implant in place or having it removed.

Breast Augmentation came into existence in the 1900's, when the treatment involved injecting adipose tissues into the breasts. Unfortunately, this method was proven ineffective because the injected fat did not stay in place. This type of Breast Augmentation was then not favored for its dissatisfactory and sometimes dangerous results.

The silicone and saline breast implants utilized today can be traced back to the early 1960s, when safer breast enlargement implants were introduced. Although the structure and design of those implants formed the base for the breast cosmetic revolution, today breast implants are much more durable, safe and deliver a much more natural sensation and look.